/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.intel.oap.expression

import com.google.common.collect.Lists
import org.apache.arrow.gandiva.evaluator._
import org.apache.arrow.gandiva.exceptions.GandivaException
import org.apache.arrow.gandiva.expression._
import org.apache.arrow.vector.types.pojo.ArrowType
import org.apache.arrow.vector.types.pojo.Field

import org.apache.spark.sql.catalyst.expressions._
import org.apache.spark.internal.Logging
import org.apache.spark.sql.types._
import org.apache.spark.sql.vectorized.{ColumnarBatch, ColumnVector}

import scala.collection.mutable.ListBuffer

class ColumnarBoundReference(ordinal: Int, dataType: DataType, nullable: Boolean)
    extends BoundReference(ordinal, dataType, nullable)
    with ColumnarExpression
    with Logging {

  buildCheck()

  def buildCheck(): Unit = {
    try {
      dataType match {
        case at: ArrayType =>
        case _ =>
          ConverterUtils.checkIfTypeSupported(dataType)
      }
    } catch {
      case e: UnsupportedOperationException =>
        throw new UnsupportedOperationException(
          s"${dataType} is not supported in ColumnarBoundReference.")
    }
  }
  override def doColumnarCodeGen(args: java.lang.Object): (TreeNode, ArrowType) = {
    val resultType = CodeGeneration.getResultType(dataType)
    val field = ConverterUtils.createArrowField(s"c_$ordinal", dataType)
    val fieldTypes = args.asInstanceOf[java.util.List[Field]]
    fieldTypes.add(field)
    (TreeBuilder.makeField(field), resultType)
  }

}
